Why Can’t Humans Be Pregnant for More Than 9 Months?
The issue is that the human body has not evolved enough to carry a fetus longer than 9 months.Longer pregnancies face two biological trade-offs. Humans would need a larger pelvic ...
The issue is that the human body has not evolved enough to carry a fetus longer than 9 months.Longer pregnancies face two biological trade-offs. Humans would need a larger pelvic ...
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